Tandem draft connection for harvesters.



A. L'JGHNS'ONL H. SPERRYV. TANDEM DRAPI" CONNECTION FOR HARVESTERS.

APPLICATION FILED APB.. 1, 1911.A

Patented-Julylil, 1911:'.-

o HN.

A. L. JOHNSON & H. `B. SPERRY.

TANDBM DRAFT CONNECTION F011 HARVESTERS.

APPLICATION FILE? APR. 1, 1911. 997,91 7.

Patented July 11, 191.1.

2 SHEETS-SHBET 2.

Ivwen/brs. ndre WL Jhmon iLl/nesses:

-iINITED sTATEs PATENT OFFICE;

ANDREW L-.f JoHNsoNIAND HERBERT E. sPERRY, or CHICAGO, ILLINOIS, AssIGNORs i To INTERNATIONAL HARVESTER COMPANY, A CORPORATION OE NEW JERSEY.-

TANDEM DRAFT CONNECTION l EOR HARVESTERS.

To all' "whomfitv'j-n'ag/= concern): i

Be 1t known that ,we,`ANDREw L. JOHN- SON andHERBERTB. SPERRY, citizens ofthe United States,"residingat'Chicago; in the countyof Cook'and State of Illinois, have invented certain new and useful Improve ments inI Tandem Draft Connections for Harvesters,' of f which the following is a specication.. 't 1 Our'l invention l relates to mechanism whereby a seriesv of grain. harvestersA orv other implement-s may be .connected `together in tandem 'relation-and drawn forL ward by -a singles'ou'rce ofpower, as a trac# tion *enginey connected with the front machine of the series,and consists in providing draft connections'between the separate harvesters and between the series' and the source of power that may be manipulated in a manner to control the line of advance of one machine independent of the others in amanner whereby a greater or less lwidth of swath may be cut by either unit of the series. `The 'object of our invention being to provide ja mechanismI that may be operated in a positive manner by the Operator from his position upon the harvester to control ythe line ofadvance of the machines,

strong in itsl construction and eiicient in operation.` Theseobjects are ,attainedfby means of the mechanism illustrated by the accompanying drawings, in which-,

l Figure-1. is a top Aplan view of part of harvester frame suflicient to illustrate the:

manner of attaching .our improved draft connection thereto; Fig." 2 is an end elevationof Fig. 1i; Fig. 3 is a detached detail of the draft connectionon a large scale. with v'some of the parts cut away; Fig.` 4 is a side elevation of Figf; Figl is a detail,` on an enlarged scale,of part ofthe draft adjusting mechanism, being a bottom view; Fig.

6 is a detail showing the manner of connecting the. rear end of the reach bar of the draft connection with the rear sill of the harvester frame; Fig, 7 is a vertical Vcross vsection of Fig. 6; and Fig. 8 is aplan view illustrating the application Vof our tandem draft connection to a series of trailing harvesters and the manner of adjusting it to tion wheel 2, a wheelframe having 'frame 'membersrupon opposite sides of-the wheel and frontl and rear members 4 and`5', respectively, that are secured to opposite ends of frame members 3; Gand 7 front andrear sill members,respectively, ofthe grain plat-v form having their stubbl'eward ends secured tothe wheel frame, and 8 representsaseait supporting member forming part of the harvester frame. t

9 vrepresents a `bracket secured to' 'ther front sill of the grain vplatform at its delivy ery end and having lan eye 10`.at it'sforwardy end that receives a hook 11 integral with a draft bracket -12,"the bracket having a depending web 13 upon its grainward end; to which is connected the forward endl ofa reach bar 14 by means of aspin 15,'the reach' bar extending rearward and grai-nward under the grain platform and having.y its rear end 'connected with the rear sill of the grain platform by mea-ns of al stirrup 16,l

and an opening 17 near its extremity,

whereby lthe reach bar may be connected with the .draft tongue of a trailing machine..`

18' represents a supplemental bracket ses` cured -to the front sill of the grain platform i at its stubblewardend and having a stem .19y

projecting stubbleward from itsv front end and in axial `alinement with-the eye `ltlfof Specification o1? Letters Patent. Patented vJlllyilLfQlil.` Application ledprl 1, 1911. Serial No. 618,349. u l

2O represents a connecting bar arrangedf A' parallel with the grain platform -and'having its grainward end .secured to a ,web por-- tion 21 forming part vofbracketv 12,A and its stubbleward end turned rearwardand pro-v vided with an opening thatkloosel'y receivesI the stem 19 of the'supplemental bracket. y.

' 22 represents al draft member extending forward at right angles withthe'harvesterf and having its rear end pivotally'connected with the stem 19, and 23 represents a supple-i mental draft member having its forward end secured to member 22 and inclined rear-l ward and grainward is secured `at its rea-r end to'bracket 12. ,l I 1 H24 vrepresents aldraft *tonguev havingits` rear end pivotally'lc'onnected with anea-r member 25 integral. with bracket-12 ina manner. permitting the tongue to swing in a lateral directionl relative to the lineo-f draft of the machine7 the tongue being provided at its front end with draft connecting means 26 whereby it may be connected with the reach bar7 of another like draft mechanism connected 'with a harvester, or with a traction engine.

27 represents a common form of tilting lever pivotally mounted upon the harvester frame and connected with the draft tongue by `means of a link 28 and an eye bolt 29.

30 represents a plate secured to the upper side of the draft tongue by means of bolts 31; 32 is a vertically arranged stud forming part of the plate, and 33 is a worm wheel journaled upon the stud and having integral therewith a pinion 34 that meshes with a rack 35 arranged concentric with the axis of the tongue connection with the bracket 1Q., the stuccieward end of therack being secured to the frontend of draftmember 22. The gear teeth of pinion 34 are shrouded at their upper ends, the shroud overlapping the rack in a manner to secure it in operative relationA with the rack, and 36 represents a lip portion upon the plate that engages with the rear .edge of the rack in a manner to hold it in mesh with the pinion.

3T representsupwardly extending ears integral With the plate 30 and provided with openings therein that are substantially in line with the tongue, and journaled in the openings is a short shaft 38, upon which is secured a worm 39 that engages with the Aworm wheel 33, and 4() represents a universal coupling member secured to'the rear end of the shaft.

41 represents a bracket secured to the front end pf the seatsupporting pipe of the harvester, and inclined forwardand upward is'provided with an openiner at its upper end in which is journaled a shaft 42 that inclines f forward and downward in the direction of the line of draft of the machine, the forward end o'f the shaft being journaled in the up per end of a bracket 43 secured to the rear end of the seat supporting pipe. The rear end of the shaft is provided with a hand crank 44, and 45 represents a universal coupling member secured to the front end of the shaft and forming part of the coupling mechanism that connects' the shaftJ with a coupling member 46 that is provided with' a sleeve portion 47 that telescopically receives the upper end of a shaft 48 that inclines downward and forward and has its lower end connected by means of a universal coupling mechanism 49 with the short shaft 38.

The operator may rotate the short shaft with its worm by means of the crank 44 in a manner to change the angular relation of the draft tongue relative to the harvesterv and thus cause each machine to advance in a predetermined path relative to the path of the source of power within the range of adjustment of the tandem draft connections, as shown in Fig. 8.

lVhat we claim as our invention, and desire to secure by Letters Patent, is:

1. A tandem draft connection for use in connection with agricultural implements including, in combination, a draft tongue pivotally connected .with an implement in a manner to swing laterally relative to the line of draft of the machine, a reach bar extending from the tongue connection to the rear of the implement, means for adjusting the angular relation of said draft tongue and the implement, said means including a toot-hed rack concentric with the pivotal axis of said tongue and secured against lateral movement relative to said implement, a combined worm wheel and pinion mounted upon said tongue, said pinion engaging with said rack, a worm journaled upon said tongue and engaging with said worm wheel, and means extending to the rear of the implement and operative to rotate said worm in either direction.

2. A tandem draft connection for implements including, in combination, a draft frame having its rear end pivotally connected with the implement in a manner to swing upward or downward at its forward end, a draft tongue pivotally connected with said draft frame in a manner permitting it to swing laterally relative to the line of draft of the machine, a reach bar having its forward end connected with said draft frame and extending rearward therefrom in rear of the implement, means for adjusting the angular relation of said draft tongue and said implement, said means including a toothed rack concentric with the pivotal axis of said draft tongue andsecured to the front end of said draft frame, a combined worm wheel and pinion mounted upon said tongue, said pinion engaging with said rack, a worm journaled upon said tongue and engaging with said worm wheel, and means extending to the rear of the implement and operative to rotate said worm in either direction.

A. L. JOHNSON. H. B. SPERRY.

4lVitnesses H. B. MUEHLHAUSEN, P. N. SHEA. 

